Evidence row 548563

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.tokenizen.nl/api/quick-check"
    ]
  ],
  "name": "x402.tokenizen.nl/api/quick-check",
  "owner_address": "0x015eb036560216b3051339061ff68a207e0fe88f",
  "raw": {
    "accepts": [
      {
        "amount": "50000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "50000",
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x015Eb036560216B3051339061FF68A207E0fe88f",
        "scheme": "exact"
      }
    ],
    "description": "Fast, free-of-LLM Solidity vulnerability pre-screen — 7 regex detectors benchmarked against 9,369 known SolidiFI bugs (75.5-100% recall, 96.2-99.9% precision per bug type)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "filename": "MyContract.sol",
              "source": "<raw Solidity source code as text>"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "detectors_run": 7,
              "filename": "MyContract.sol",
              "findings": [
                {
                  "caveat": null,
                  "detector": "reentrancy",
                  "label": "State write after external call (reentrancy)",
                  "lines": [
                    42
                  ]
                }
              ],
              "methodology": "Benchmarked against SolidiFI (9,369 injected bugs, 350 real contracts).",
              "source_lines": 120
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "type": "object"
                },
                "bodyType": {
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "GET",
                    "POST"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type",
                "example"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "piprail": {
        "client": {
          "note": "No proprietary client is required. Any x402 client that implements the exact scheme on eip155:8453 can pay this endpoint."
        },
        "docs": {
          "agents": "https://github.com/holistis/agent-receipt-verify",
          "home": "https://tokenizen.nl",
          "pay": "https://x402.org"
        },
        "instruction": "tokenizen x402 payment endpoint. Pay 0.05 USDC on eip155:8453 to 0x015Eb036560216B3051339061FF68A207E0fe88f with an EIP-3009 signature in the PAYMENT-SIGNATURE header. The receipt you get back can be verified independently with npx -y agent-receipt-verify. Docs: https://tokenizen.nl.",
        "name": "tokenizen vulnerability pattern search",
        "pay": [
          {
            "amount": "50000",
            "amountFormatted": "0.05",
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "how": "Sign an EIP-3009 transferWithAuthorization for this amount to payTo and resubmit with the PAYMENT-SIGNATURE header. Any x402 client that speaks the exact scheme works.",
            "network": "eip155:8453",
            "payTo": "0x015Eb036560216B3051339061FF68A207E0fe88f",
            "scheme": "exact",
            "symbol": "USDC"
          }
        ],
        "protocol": "x402",
        "verify": {
          "note": "The receipt this endpoint returns can be checked independently, without trusting us.",
          "source": "https://github.com/holistis/agent-receipt-verify",
          "tool": "npx -y agent-receipt-verify"
        },
        "version": "2",
        "what": "This is an x402 \"402 Payment Required\" endpoint. Pay one of the offered rails to access it."
      }
    },
    "lastUpdated": "2026-10-27T17:35:04.865Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T17:35:04.656Z"
    },
    "resource": "https://x402.tokenizen.nl/api/quick-check",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Fast, free-of-LLM Solidity vulnerability pre-screen — 7 regex detectors benchmarked against 9,369 known SolidiFI bugs (75.5-100% recall, 96.2-99.9% precision per bug type)"
}

What the leaf hashes

{"body":"e3218727b8c177bbeaae67e1717bf71fc7c9f07f9fd52ac6f8f253fcca306abc","id":548563,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133312428441,"prev":null,"subject":"x402_bazaar:https://x402.tokenizen.nl/api/quick-check","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xf5080ef09066978fafb025576798a1f44f091244049b68dd8d902bb109777374
2. 0xae153de51ba25f10d6af3cb8e60c8eaa030138e11c63c9465df092dcbb28aaef
3. 0x52e51f8c0caec899329a875ac2af616eb94575b3d72e3f4cdcdcfb44551847ce
4. 0xe4520963d2343582fcdf88df723505abc852f62ad7f35f2ec323394bec8c9891
5. 0xc13f960ed02ab99dd8bca06d62e3fa0e8089db3a16bd19c3584801ab3b7c3be7
6. 0x79a6a70762dca94e71b3a536770ebd4b5fd21bf12385b9f7222beef2e16ab8e1
7. 0xeba1fdce282b77def4a1243e2a666b3db550a431d19d15054ddf7e96a32c8c20
8. 0xb903996c95bc51e435b0cee540ab8bdc1c85388ee1a85a771e3bab1ee1ec0f36
9. 0xada3cd8f79645dafe16116f799c9d819f91cd18629a07eb6f39f297e8373a7b2
10. 0x93fc5308107b180f57d801c3d45bf7c4b0bcf9c2e5d1bda9bb75b99123fad1ef
11. 0x1ffe67ce384817ba887de8b4161984586f165c7fa95cef6567ef55d47adb58f2
12. 0xd80cea574304ef1eee7c8b03c1efcaf66eb83498acb1756c4e37eb1d063b48be
13. 0x47993ad5e402c748d96928c5127292d12f5f590d15cf544698f6bb348ad7dc9b
14. 0xce1471491ffb52101d7cd9884cca0fb37a9496f6e8250375054907d24a35d04f
15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4